CA2123521C - Safety interposer for surgical instruments - Google Patents
Safety interposer for surgical instruments Download PDFInfo
- Publication number
- CA2123521C CA2123521C CA002123521A CA2123521A CA2123521C CA 2123521 C CA2123521 C CA 2123521C CA 002123521 A CA002123521 A CA 002123521A CA 2123521 A CA2123521 A CA 2123521A CA 2123521 C CA2123521 C CA 2123521C
- Authority
- CA
- Canada
- Prior art keywords
- safety
- obturator
- interposer
- shaft
- surgical instrument
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3474—Insufflating needles, e.g. Veress needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
- A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/038—Automatic limiting or abutting means, e.g. for safety during shipment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
Abstract
Packaging for use in transportation and handling of a surgical instrument including a safety device which prevents engagement of the instrument or movement of a safety mechanism from a safety position. In a preferred embodiment the safety device is a safety interposer shaped to fit around the shaft of a trocar. The safety interposer acts as a physical barrier between the trocar and cannula of the trocar assembly and prevents the two parts from coupling which may occur from jostling during transportation or handling.
Description
S~FET~C ~CNTERPOSER F'OR S~RO;~CAh IffsTR~tEDITS
F~E3lrD OF THE II~f'H'f~OH
This invention relates to packaa~ing for use in transportation, handling and storage of surgical instruments'including a means to prevent engagement of the surgical instrument or movement of a safety means from a safety position where upon engagement or movement of the instrument, sharp edges or points of the instrument could be exposed.
B~CRGROtIND OF THE IN'VEP~TIO~i It is important for surgical instruments to be packaged in a readily presentable sterile condition. If the instrument is engaged,. particularly if the instrument has sharp edges exposable when engaged, it may disturb the packaging containing the instrument so as to compromise its sterile environment. For example, if a tip of a trocar or an insufflation needle is exposed, it may puncture the packaging.
Flexible packaging is particularly vulnerable to such puncturing or disturbance. Flexible packaging is defined herein as a packaging which does not rigidly conform to the contents of the package. Examples of such packaging are surgical drapes and closed cell foam which may be formed from materials such as, for example, cellulose or plastics. The use of flexible packaging has become increasingly desirable as opposed to thermoformed blister packaging or Styrofoam type packaging which have recently become less desirable for reasons relating to economics, ease of packag.i:~g disposal in the operating room, processing considerations and environmental concerns.
It is therefore desirable in the sterile packaging of surgical instruments, especially flexible packaging, to prevent unintended engagement of the device or movement of a safety mechanism from its safety position, which could expose a sharp instrument.
A trocar assembly for use in endoscopic surgical procedures generally comprises two major components, an obturator and a cannula. The obturator is _nitially positioned within the cannula and has a puncturing or penetrating tip which typically extends from the cannula.
The obturator tip is used to penetrate the skin and underlying tissue to provide cannula access to a body cavity. The obturator may then be removed and laparoscopic or arthroscopic surgery performed through the cannula. An example of such a device is described in U.S.
Patent No. 4,535,'773.
Typically, in transportation and storage as well as in use, the obturator is positioned in the cannula and the puncturing or penetrating tip of the obturator extends from the distal end of the cannula. However, many trocars have safety shields which cover the tip of the obturator. If the trocar is not armed, the safety shield is maintained in its tip covering position. When the trocar assembly is engaged for puncturing, the safety shield can be moved to expose the puncturing or penetrating tip of the obturator.
An example of a means for engagement of the trocar is a safety spring which is actuated by a spring actuating ~123~2~
F~E3lrD OF THE II~f'H'f~OH
This invention relates to packaa~ing for use in transportation, handling and storage of surgical instruments'including a means to prevent engagement of the surgical instrument or movement of a safety means from a safety position where upon engagement or movement of the instrument, sharp edges or points of the instrument could be exposed.
B~CRGROtIND OF THE IN'VEP~TIO~i It is important for surgical instruments to be packaged in a readily presentable sterile condition. If the instrument is engaged,. particularly if the instrument has sharp edges exposable when engaged, it may disturb the packaging containing the instrument so as to compromise its sterile environment. For example, if a tip of a trocar or an insufflation needle is exposed, it may puncture the packaging.
Flexible packaging is particularly vulnerable to such puncturing or disturbance. Flexible packaging is defined herein as a packaging which does not rigidly conform to the contents of the package. Examples of such packaging are surgical drapes and closed cell foam which may be formed from materials such as, for example, cellulose or plastics. The use of flexible packaging has become increasingly desirable as opposed to thermoformed blister packaging or Styrofoam type packaging which have recently become less desirable for reasons relating to economics, ease of packag.i:~g disposal in the operating room, processing considerations and environmental concerns.
It is therefore desirable in the sterile packaging of surgical instruments, especially flexible packaging, to prevent unintended engagement of the device or movement of a safety mechanism from its safety position, which could expose a sharp instrument.
A trocar assembly for use in endoscopic surgical procedures generally comprises two major components, an obturator and a cannula. The obturator is _nitially positioned within the cannula and has a puncturing or penetrating tip which typically extends from the cannula.
The obturator tip is used to penetrate the skin and underlying tissue to provide cannula access to a body cavity. The obturator may then be removed and laparoscopic or arthroscopic surgery performed through the cannula. An example of such a device is described in U.S.
Patent No. 4,535,'773.
Typically, in transportation and storage as well as in use, the obturator is positioned in the cannula and the puncturing or penetrating tip of the obturator extends from the distal end of the cannula. However, many trocars have safety shields which cover the tip of the obturator. If the trocar is not armed, the safety shield is maintained in its tip covering position. When the trocar assembly is engaged for puncturing, the safety shield can be moved to expose the puncturing or penetrating tip of the obturator.
An example of a means for engagement of the trocar is a safety spring which is actuated by a spring actuating ~123~2~
element connected to the distal end of an obturator handle. When the obturator is inserted into the cannula, a portion of the spring actuating element located at the distal end of the obturator handle engageably interacts with the proximal end of a cannula handle to move the safety spring from a first position to a second position.
In the second position, the safety sriield can then be retracted from its covering position over the obturator tip. An example of such a safety spring is described in U.S. Patent No. 5,114,407.
It is therefore desirable in the packaging of trocar assemblies to prevent unintended engagement.
A Verress-type or insufflation needle typically comprises a sharp needle having a lumen extending therethrough. An inner needle having a rounded safety tip extends through the lumen and distally beyond the sharp distal needle tip. When the safety tip engages with an outside object, if the force is great enough, the safety tip moves axially and proximally within the needle to expose the sharp needle tip. An example of such a needle is described in U.S. Patent :lo. x,139,485.
~5 It is therefore desirable when packaging a Verress needle to prevent proximal axial movement of the safety tip away from its safety position.
It is also desirable to prevent unintended engagement of surgical instruments to avoid other safety concerns which may be posed by an exposed sharp instruments.
2~.23~2~.
In the second position, the safety sriield can then be retracted from its covering position over the obturator tip. An example of such a safety spring is described in U.S. Patent No. 5,114,407.
It is therefore desirable in the packaging of trocar assemblies to prevent unintended engagement.
A Verress-type or insufflation needle typically comprises a sharp needle having a lumen extending therethrough. An inner needle having a rounded safety tip extends through the lumen and distally beyond the sharp distal needle tip. When the safety tip engages with an outside object, if the force is great enough, the safety tip moves axially and proximally within the needle to expose the sharp needle tip. An example of such a needle is described in U.S. Patent :lo. x,139,485.
~5 It is therefore desirable when packaging a Verress needle to prevent proximal axial movement of the safety tip away from its safety position.
It is also desirable to prevent unintended engagement of surgical instruments to avoid other safety concerns which may be posed by an exposed sharp instruments.
2~.23~2~.
~7C OF' TAE II~dVI~I~IT~Old The present invention provides an interposes means to prevent engagement of a surgical instrument or a corresponding movement of a safety mechanism, to expose a sharp instrument such as a cutting or puncturing instrument, e.g., a trocar tip. More particularly, the present invention provides a safety interposes which may be used for packaging surgical instruments in a sterile packaging environment. The safety interposes acts to prevent coupling or engagement of interactive parts of the instrument or prevent :,~,ovement oz a safety mechanism from a safety position.
In a preferred embodiment of the present invention, a safety interposes is used to prevent coupling of a cannula handle and an obturator handle of a trocar assembly where such coupling acts to engage the trocar assembly. The interposes thereby prevents the trocar obturator from inadvertently extending from its safety shield.
Another feature of the present invention provides a safety interposes with a slotted hole configuration to allow it to fit around the shaft or tubular member of an instrument and to be easily removed by pulling it in a direction approximately perpendicular to the instrument's axis.
~0 In a preferred embodiment of the invention, the safety interposes is shaped to fit around the shaft of the obturator and act as a physical barrier to prevent a spring actuating element located on the distal end of the _ 5 _ obturator handle, engaging the cannula handle to thereby permit movement of the safety shield.
In another embodiment a safety interposes may be inserted around the shaft of an inner needle with a safety tip which is inserted into a hollow insufflation needle, to prevent depression of the safety tip to expose the sharp hollow outer needle. A notch is cut through the hollow needle or its housing and into the inner needle.
The shaft of the inner needle is adapted to receive the interposes to physically block the tip's longitudinal axial movement with respect to the hollow needle, thereby avoiding exposing the sharp hollow needle tip. The safety interposes may also be shaped to fit around a tubular member attached to the inner needle with safety tip. The safety interposes is physically removable from the instrument.
DET~.ILED DESCFtTF~°~~E~? OF TFiS DRA'WII~If~S
Fig. 1 illustrates a perspective view of an uncoupled trocar assembly with a safety interposes.
Fig. 2 illustrates an exploded perspective view of an uncoupled trocar assembly with a safety in~terposer.
Fig. 3 illustrates a perspective view of a coupled trocar assembly with the safety mechanism covering the obturator.
Fig. 4 illustrates a partial perspective view of an exposed obturator tip with a retracted safety mechanism.
~~~J~~~
Fig. 5 illustrates a partial cros;a sectional view of a troear assembly with a safety interposes taken along lines 5-5 of Fig. 1.
Fig. 6 illustrates an cross sectional view of a trocar assembly of Fig. 3 with parts broken away.
Fig. 7 illustrates a bottom plan view of a safety interposes with a tracar assembly.
Fig. 8 illustrates a safety interposes of the present invention as seen along '_ine 8-8 of Fig. ,.
Fig. 9 illustrates a cross-section of a Verress-type needle with a safety interposes.
Fig 10 illustrates a cross section of the Veress-type needle illustrated in Fig. 9 along line 10-10.
Fag 11 illustrates a cross section of the Veress-type needle illustrated in Fig. 9 along line 11-11.
DE'rl~~LED DE~CItIPT~DN OF 'fFiE PREFERRED EkIE~7DTME3JT
Referring now to Figs. 1-8 there is illustrated a trocar assembly 12 comprising a cannula 14 and an obturator 22. The cannula 14 comprises a cannula handle 15 with a proximal end 16. The proximal end 16 of the cannula handle 15 has an outer circumferential rim 17 which projects proximally outward from the proximal end 16 of the cannula handle 15. The obturator 22 comprises an obturator handle 24, an obturator shaft 26, a puncturing tip 23 and a safety shield 25. The obturator handle 24 comprises a distal end 28 which has coupling means 27 and ~°ND- 8 3 a safety mechanism 30 comprising a spring actuator 31 and a safety spring 32.
The coupling means 27 may be received by the proximal end I6 of the cannula handle 15 to couple the obturator 22 with the cannula 14. In coupling with the cannula 14, the coupling means 27 extend inside and beyond the rim 17 of the cannula handle 15 towards the end 16.
The safety mechanism 30 is shown in a safety position in Figs. 1, 2, 5, 7 and 8 and in its released or engaged position in Figs. 3, .~ and 5 which illustrate a coupled trocar assembly 12. When the trocar assembly 12 is coupled, the rim 17 of the cannula handle proximal end 16 contacts and depresses the spring actuator 31. The depressed .spring actuator 31 causes the safety spring 32 to move to release the safety shield 25. A mechanism by which a similar spring actuator operates to release a safety shield is described in U.S. Patent No. 5,114,407.
Referring now to Figures 2 and 8, there is illustrated a safety interposes 40 having a first and a second arm 41 and 42 defining a slot, relatively circular in shape. Each of the first and second arm 41 and 42 has an inwardly projecting element 43 which serves to narrow the slot and close the circle to permit the safety interposes 40 to engage relatively snugly around the obturator shaft 26 (Fig. 8) while not closing completely around the shaft. The slot permits the interposes 40 to be inserted around the shaft 26 and removed when a pulling force, generally perpendicular to the trocar axis, is applied to the interposes 40 on a side 44 opposite the slot. The side 44 projects from the trocar assembly 12 so - a -that a user may grasp the side 44 to remove the interposes 40 from the trocar assembly 12.
The interposes 40 is of sufficient length and width so that when it is inserted between the cannula handle proximal end 16 and obturator handle distal end 24, it contacts the outer circumferential rim 17 extending from cannula handle proximal end 16. The interposes 40 is sufficiently rigid so that it will not displace distally from the rim 17 towards the cannula proximal end 16 to an extent that the rim 17 can depress the spring actuator 31 and engage the safety :mechanism 30. Thus the interposes 40 prevents engagement of the trocar.
Figs. 1, 5 and 7 illustrate a trocar assembly 12 with a safety interposes 40 inserted between the cannula handle 15 and the obturator handle 24. The obturator coupling means 27 extend further distally from the obturator handle 24 than the spring actuator 31. Therefore when the interposes 40 is positioned between the distal end 28 of the obturator handle 20, and the proximal end 16 of the cannula handle, the interposes -~0 blocks the :coupling :jeans 27 from coupling the obturator 22 with the cannula 14. Because the coupling means 27 extend a greater distance from the distal end 28 of the obturator, the interposes 40 does not come in contact with the spring actuator 31. Thus the interposes 40 creates a physical barrier to prevent depression of the spring actuator 31 which when depressed, releases the safety spring 32 and permit the safety shield 25 to be moved from a protective safety position covering the puncturing tip 23 of the obturator 22 as illustrated in Figs. 3, 4 and 6.
, _. g -Referring now to Figs. 9-il there is illustrated a Veress-type needle 100 with a safety interposes 140. The Veress needle 100 has an outer needle 101 with a sharp tip 112. The outer needle 104 is maintained in a housing 102 having inserted in it, an inner needle 104 with a rounded or blunt tip 105. The inner needle 104 is spring loaded at the end 109 of a spring 107. Without the interposes 140, the tip 112 may be depressed and cause the inner needle 104 to retract into the handle 102; the needle 104 moving axially with respect tn the needle 101 thereby exposing the sharp tip 112. Use of a similar Veress-type needle is more fully described in U.S. patent No.
In a preferred embodiment of the present invention, a safety interposes is used to prevent coupling of a cannula handle and an obturator handle of a trocar assembly where such coupling acts to engage the trocar assembly. The interposes thereby prevents the trocar obturator from inadvertently extending from its safety shield.
Another feature of the present invention provides a safety interposes with a slotted hole configuration to allow it to fit around the shaft or tubular member of an instrument and to be easily removed by pulling it in a direction approximately perpendicular to the instrument's axis.
~0 In a preferred embodiment of the invention, the safety interposes is shaped to fit around the shaft of the obturator and act as a physical barrier to prevent a spring actuating element located on the distal end of the _ 5 _ obturator handle, engaging the cannula handle to thereby permit movement of the safety shield.
In another embodiment a safety interposes may be inserted around the shaft of an inner needle with a safety tip which is inserted into a hollow insufflation needle, to prevent depression of the safety tip to expose the sharp hollow outer needle. A notch is cut through the hollow needle or its housing and into the inner needle.
The shaft of the inner needle is adapted to receive the interposes to physically block the tip's longitudinal axial movement with respect to the hollow needle, thereby avoiding exposing the sharp hollow needle tip. The safety interposes may also be shaped to fit around a tubular member attached to the inner needle with safety tip. The safety interposes is physically removable from the instrument.
DET~.ILED DESCFtTF~°~~E~? OF TFiS DRA'WII~If~S
Fig. 1 illustrates a perspective view of an uncoupled trocar assembly with a safety interposes.
Fig. 2 illustrates an exploded perspective view of an uncoupled trocar assembly with a safety in~terposer.
Fig. 3 illustrates a perspective view of a coupled trocar assembly with the safety mechanism covering the obturator.
Fig. 4 illustrates a partial perspective view of an exposed obturator tip with a retracted safety mechanism.
~~~J~~~
Fig. 5 illustrates a partial cros;a sectional view of a troear assembly with a safety interposes taken along lines 5-5 of Fig. 1.
Fig. 6 illustrates an cross sectional view of a trocar assembly of Fig. 3 with parts broken away.
Fig. 7 illustrates a bottom plan view of a safety interposes with a tracar assembly.
Fig. 8 illustrates a safety interposes of the present invention as seen along '_ine 8-8 of Fig. ,.
Fig. 9 illustrates a cross-section of a Verress-type needle with a safety interposes.
Fig 10 illustrates a cross section of the Veress-type needle illustrated in Fig. 9 along line 10-10.
Fag 11 illustrates a cross section of the Veress-type needle illustrated in Fig. 9 along line 11-11.
DE'rl~~LED DE~CItIPT~DN OF 'fFiE PREFERRED EkIE~7DTME3JT
Referring now to Figs. 1-8 there is illustrated a trocar assembly 12 comprising a cannula 14 and an obturator 22. The cannula 14 comprises a cannula handle 15 with a proximal end 16. The proximal end 16 of the cannula handle 15 has an outer circumferential rim 17 which projects proximally outward from the proximal end 16 of the cannula handle 15. The obturator 22 comprises an obturator handle 24, an obturator shaft 26, a puncturing tip 23 and a safety shield 25. The obturator handle 24 comprises a distal end 28 which has coupling means 27 and ~°ND- 8 3 a safety mechanism 30 comprising a spring actuator 31 and a safety spring 32.
The coupling means 27 may be received by the proximal end I6 of the cannula handle 15 to couple the obturator 22 with the cannula 14. In coupling with the cannula 14, the coupling means 27 extend inside and beyond the rim 17 of the cannula handle 15 towards the end 16.
The safety mechanism 30 is shown in a safety position in Figs. 1, 2, 5, 7 and 8 and in its released or engaged position in Figs. 3, .~ and 5 which illustrate a coupled trocar assembly 12. When the trocar assembly 12 is coupled, the rim 17 of the cannula handle proximal end 16 contacts and depresses the spring actuator 31. The depressed .spring actuator 31 causes the safety spring 32 to move to release the safety shield 25. A mechanism by which a similar spring actuator operates to release a safety shield is described in U.S. Patent No. 5,114,407.
Referring now to Figures 2 and 8, there is illustrated a safety interposes 40 having a first and a second arm 41 and 42 defining a slot, relatively circular in shape. Each of the first and second arm 41 and 42 has an inwardly projecting element 43 which serves to narrow the slot and close the circle to permit the safety interposes 40 to engage relatively snugly around the obturator shaft 26 (Fig. 8) while not closing completely around the shaft. The slot permits the interposes 40 to be inserted around the shaft 26 and removed when a pulling force, generally perpendicular to the trocar axis, is applied to the interposes 40 on a side 44 opposite the slot. The side 44 projects from the trocar assembly 12 so - a -that a user may grasp the side 44 to remove the interposes 40 from the trocar assembly 12.
The interposes 40 is of sufficient length and width so that when it is inserted between the cannula handle proximal end 16 and obturator handle distal end 24, it contacts the outer circumferential rim 17 extending from cannula handle proximal end 16. The interposes 40 is sufficiently rigid so that it will not displace distally from the rim 17 towards the cannula proximal end 16 to an extent that the rim 17 can depress the spring actuator 31 and engage the safety :mechanism 30. Thus the interposes 40 prevents engagement of the trocar.
Figs. 1, 5 and 7 illustrate a trocar assembly 12 with a safety interposes 40 inserted between the cannula handle 15 and the obturator handle 24. The obturator coupling means 27 extend further distally from the obturator handle 24 than the spring actuator 31. Therefore when the interposes 40 is positioned between the distal end 28 of the obturator handle 20, and the proximal end 16 of the cannula handle, the interposes -~0 blocks the :coupling :jeans 27 from coupling the obturator 22 with the cannula 14. Because the coupling means 27 extend a greater distance from the distal end 28 of the obturator, the interposes 40 does not come in contact with the spring actuator 31. Thus the interposes 40 creates a physical barrier to prevent depression of the spring actuator 31 which when depressed, releases the safety spring 32 and permit the safety shield 25 to be moved from a protective safety position covering the puncturing tip 23 of the obturator 22 as illustrated in Figs. 3, 4 and 6.
, _. g -Referring now to Figs. 9-il there is illustrated a Veress-type needle 100 with a safety interposes 140. The Veress needle 100 has an outer needle 101 with a sharp tip 112. The outer needle 104 is maintained in a housing 102 having inserted in it, an inner needle 104 with a rounded or blunt tip 105. The inner needle 104 is spring loaded at the end 109 of a spring 107. Without the interposes 140, the tip 112 may be depressed and cause the inner needle 104 to retract into the handle 102; the needle 104 moving axially with respect tn the needle 101 thereby exposing the sharp tip 112. Use of a similar Veress-type needle is more fully described in U.S. patent No.
5,139,485.
The interposes ~s inserted through a notch 120 cut partially through housing 102, through a circumferential portion of the needle 101, and into the inner needle 104:
The notch 120 and inner needle 104 are adapted to receive the interposes to physically block the inner needle's longitudinal axial movement with respect to the hollow needle 101 and thereby avoid exposing the sharp hollow needle tip 112. The safety interposes 140 may also be shaped to fit around a tubular :,ember 108 attached 'o the inner needle (this embodiment is not illustrated). The ~5 safety interposes 140 is physically removable from the instrument.
Althouch the above description refers to specific uses of the safety interposes with a troca= assembly or an insufflation or Veress-type needle, it is not intended to be limited to the specific embodiment described. For sxample the inte~paser may be used with any surgical cutting instrument which has a shaft or tubular member around which the interposes may fit such that the interposer acts as a physical barrier to preva7t movement of a safety means from a safety position whereby a sharp edge or point could be exposed or where the interposer acts to prevent engagement of two interactive parts which if engaged would permit exposure of a sharp edge or point.
It may be observed from the above that numerous equivalents or modifications may be made without departing from the spirit and scope of the invention. No limitation to the claimed invention is intended from the specific embodiments described herein.
The interposes ~s inserted through a notch 120 cut partially through housing 102, through a circumferential portion of the needle 101, and into the inner needle 104:
The notch 120 and inner needle 104 are adapted to receive the interposes to physically block the inner needle's longitudinal axial movement with respect to the hollow needle 101 and thereby avoid exposing the sharp hollow needle tip 112. The safety interposes 140 may also be shaped to fit around a tubular :,ember 108 attached 'o the inner needle (this embodiment is not illustrated). The ~5 safety interposes 140 is physically removable from the instrument.
Althouch the above description refers to specific uses of the safety interposes with a troca= assembly or an insufflation or Veress-type needle, it is not intended to be limited to the specific embodiment described. For sxample the inte~paser may be used with any surgical cutting instrument which has a shaft or tubular member around which the interposes may fit such that the interposer acts as a physical barrier to preva7t movement of a safety means from a safety position whereby a sharp edge or point could be exposed or where the interposer acts to prevent engagement of two interactive parts which if engaged would permit exposure of a sharp edge or point.
It may be observed from the above that numerous equivalents or modifications may be made without departing from the spirit and scope of the invention. No limitation to the claimed invention is intended from the specific embodiments described herein.
Claims (9)
1. A safety device for use with a surgical instrument comprising:
a safety interposer having a slot adapted to at least partially receive a shaft of a surgical instrument, wherein said slot is shaped so that the interposer is adapted to fit at least partially around the shaft;
an end portion comprised of a grasping surface adapted for grasping to easily remove the safety interposer from the instrument; and wherein the safety interposer is adapted to act as a physical barrier to prevent movement of a safety mechanism of the surgical instrument from a safety position.
a safety interposer having a slot adapted to at least partially receive a shaft of a surgical instrument, wherein said slot is shaped so that the interposer is adapted to fit at least partially around the shaft;
an end portion comprised of a grasping surface adapted for grasping to easily remove the safety interposer from the instrument; and wherein the safety interposer is adapted to act as a physical barrier to prevent movement of a safety mechanism of the surgical instrument from a safety position.
2. A sterile packaging system for a surgical instrument comprising:
a flexible sterile outer wrap, and an interposer means for acting as a physical barrier to prevent engagement of a surgical instrument, said interposer means having a slot fitting at least partially around a shaft of the surgical instrument, and wherein said interposer means is adapted to be easily removed from the shaft.
a flexible sterile outer wrap, and an interposer means for acting as a physical barrier to prevent engagement of a surgical instrument, said interposer means having a slot fitting at least partially around a shaft of the surgical instrument, and wherein said interposer means is adapted to be easily removed from the shaft.
3. A sterile packaging system for a trocar assembly comprising:
a flexible sterile outer wrap, and an interposer means for preventing engagement of the trocar assembly device, wherein said interposer means is adapted to be easily removed from the trocar assembly device.
a flexible sterile outer wrap, and an interposer means for preventing engagement of the trocar assembly device, wherein said interposer means is adapted to be easily removed from the trocar assembly device.
4. In combination, a surgical instrument and a safety device for use therewith comprising:
a surgical instrument having a shaft;
a safety interposes having a slot adapted to at least partially receive said shaft of said surgical instrument, wherein said slot is shaped so that the interposes fits at least partially around the shaft, and wherein the safety interposes is adapted to act as a physical barrier to prevent movement of a safety mechanism of the surgical instrument from a safety position.
a surgical instrument having a shaft;
a safety interposes having a slot adapted to at least partially receive said shaft of said surgical instrument, wherein said slot is shaped so that the interposes fits at least partially around the shaft, and wherein the safety interposes is adapted to act as a physical barrier to prevent movement of a safety mechanism of the surgical instrument from a safety position.
5. In combination, a safety device and surgical instrument comprising:
a trocar assembly comprising:
an obturator having a shaft and a sharp tip; and a safety mechanism comprised of a safety shield having a safety position in which the safety shield is locked into a position in which the safety shield covers the obturator tip; and a safety interposes having a slot adapted to at least partially receive the shaft of the obturator, wherein said slot is shaped so that the interposes fits at least partially around the shaft;
wherein the safety interposes acts as a physical barrier to prevent movement of a safety mechanism of the trocar assembly from the safety position.
a trocar assembly comprising:
an obturator having a shaft and a sharp tip; and a safety mechanism comprised of a safety shield having a safety position in which the safety shield is locked into a position in which the safety shield covers the obturator tip; and a safety interposes having a slot adapted to at least partially receive the shaft of the obturator, wherein said slot is shaped so that the interposes fits at least partially around the shaft;
wherein the safety interposes acts as a physical barrier to prevent movement of a safety mechanism of the trocar assembly from the safety position.
6. The safety device and instrument of claim 4 wherein the surgical instrument is an insufflation needle.
7. The safety device and instrument of claim 6 wherein:
said safety mechanism is an inner needle, said inner needle having a blunt tip and being disposed within an outer needle having a sharp tip and;
said safety position is where the tip of the inner needle extends beyond the sharp tip of the outer needle.
said safety mechanism is an inner needle, said inner needle having a blunt tip and being disposed within an outer needle having a sharp tip and;
said safety position is where the tip of the inner needle extends beyond the sharp tip of the outer needle.
8. The safety device of claim 7 wherein: said safety needle comprises a notch;
and said slot of said interposer is shaped to fit in the notch to prevent said tip of said inner needle from retracting within the outer needle to expose the sharp tip.
and said slot of said interposer is shaped to fit in the notch to prevent said tip of said inner needle from retracting within the outer needle to expose the sharp tip.
9. In combination, a sterile packaging system and a trocar assembly comprising:
a flexible sterile outer wrap;
an interposer means for preventing engagement of the trocar assembly device;
and a trocar assembly including:
a cannula having: a proximal end and a distal end, the proximal end coupled to a cannula handle having a proximal end;
an obturator having: a proximal end coupled to an obturator handle having a distal end, a shaft, and a distal end comprising a puncturing tip which is extendable through said cannula and beyond the distal end of said cannula;
a safety shield capable of covering the puncturing tip of said obturator, said safety shield coupled to the obturator handle and axially moveable with respect to said obturator to expose the puncturing tip when said obturator is engaged; and engagement means which operates to engage said trocar assembly when the cannula handle and the obturator handle are coupled for use;
wherein said interposer is adapted to prevent engagement of said trocar assembly by physically intercepting said engagement means.
a flexible sterile outer wrap;
an interposer means for preventing engagement of the trocar assembly device;
and a trocar assembly including:
a cannula having: a proximal end and a distal end, the proximal end coupled to a cannula handle having a proximal end;
an obturator having: a proximal end coupled to an obturator handle having a distal end, a shaft, and a distal end comprising a puncturing tip which is extendable through said cannula and beyond the distal end of said cannula;
a safety shield capable of covering the puncturing tip of said obturator, said safety shield coupled to the obturator handle and axially moveable with respect to said obturator to expose the puncturing tip when said obturator is engaged; and engagement means which operates to engage said trocar assembly when the cannula handle and the obturator handle are coupled for use;
wherein said interposer is adapted to prevent engagement of said trocar assembly by physically intercepting said engagement means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6197393A | 1993-05-17 | 1993-05-17 | |
| US061,973 | 1993-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2123521A1 CA2123521A1 (en) | 1994-11-18 |
| CA2123521C true CA2123521C (en) | 2006-07-25 |
Family
ID=22039399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002123521A Expired - Fee Related CA2123521C (en) | 1993-05-17 | 1994-05-13 | Safety interposer for surgical instruments |
Country Status (8)
| Country | Link |
|---|---|
| US (2) | US5437643A (en) |
| EP (1) | EP0629381B1 (en) |
| JP (1) | JPH0767883A (en) |
| AT (1) | ATE159162T1 (en) |
| AU (1) | AU677645B2 (en) |
| CA (1) | CA2123521C (en) |
| DE (1) | DE69406194T2 (en) |
| GR (1) | GR1002985B (en) |
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| US5779680A (en) * | 1991-11-27 | 1998-07-14 | Yoon; Inbae | Retractable safety needle instrument with movable safety member |
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| US5707363A (en) * | 1996-02-29 | 1998-01-13 | Becton Dickinson And Company | Guidewire retention device |
| US6013058A (en) * | 1996-06-12 | 2000-01-11 | Biolink Corporation | Device for subcutaneous accessibility |
| US5699909A (en) * | 1996-08-07 | 1997-12-23 | United States Surgical Corporation | Surgical instrument package |
| US5951520A (en) | 1996-12-19 | 1999-09-14 | Bio-Plexus, Inc. | Self-blunting needle medical devices and methods of manufacture thereof |
| US6656160B1 (en) * | 1997-04-29 | 2003-12-02 | Applied Medical Resources Corporation | Insufflation needle apparatus |
| US5961514A (en) * | 1997-05-14 | 1999-10-05 | Ethicon Endo-Surger, Inc. | Cordless electrosurgical instrument |
| US5925041A (en) * | 1997-05-14 | 1999-07-20 | Ethicon Endo-Surgery, Inc. | Monopolar electrosurgical trocar |
| US5984921A (en) * | 1997-05-14 | 1999-11-16 | Ethicon-Endo-Surgery, Inc. | Method and apparatus for applying electrical energy to medical instruments |
| US6106519A (en) | 1997-06-30 | 2000-08-22 | Ethicon Endo-Surgery, Inc. | Capacitively coupled electrosurgical trocar |
| US5951552A (en) * | 1997-06-30 | 1999-09-14 | Ethicon Endo-Surgery, Inc. | Capacitively coupled cordless electrosurgical instrument |
| US5916215A (en) * | 1997-06-30 | 1999-06-29 | Ethicon Endo-Surgery, Inc. | Inductively coupled electrosurgical trocar |
| US5849020A (en) * | 1997-06-30 | 1998-12-15 | Ethicon Endo-Surgery, Inc. | Inductively coupled electrosurgical instrument |
| US6319266B1 (en) * | 2000-03-16 | 2001-11-20 | United States Surgical Corporation | Trocar system and method of use |
| EP1307151B1 (en) * | 2000-08-08 | 2007-11-28 | Tyco Healthcare Group Lp | Molded trocar latch |
| US6719772B2 (en) | 2001-09-13 | 2004-04-13 | Terumo Medical Corporation | Retaining device for axially restraining movement between tubular elements of a medical device |
| US7736336B2 (en) * | 2001-09-13 | 2010-06-15 | Allegiance Corporation | Paracentesis device having multiple detachable components |
| FR2848859B1 (en) * | 2002-12-20 | 2005-11-04 | Sedat | DISPENSING DEVICE FOR A NETWORK FOR DELIVERING MEDICAL FLUIDS TO A PATIENT |
| US7338494B2 (en) * | 2003-08-19 | 2008-03-04 | Synthes (U.S.A.) | Spring-loaded awl |
| WO2005034802A2 (en) | 2003-10-09 | 2005-04-21 | Sentreheart, Inc. | Apparatus and method for the ligation of tissue |
| US20050171465A1 (en) * | 2004-02-03 | 2005-08-04 | Smith Robert C. | Pneumoperitoneum needle |
| US7329233B2 (en) | 2004-10-05 | 2008-02-12 | Tyco Healthcare Group Lp | Surgical system for laparoscopic surgery |
| US20070125392A1 (en) * | 2005-12-01 | 2007-06-07 | Sdgi Holdings, Inc. | Systems and methods of accounting for surgical instruments and disposables |
| EP1875874B1 (en) * | 2006-07-06 | 2013-02-27 | Covidien LP | Two mode trocar assembly |
| EP2929842B1 (en) | 2007-03-30 | 2019-06-12 | Sentreheart, Inc. | Devices and sytems for closing the left atrial appendage |
| JP5525438B6 (en) | 2007-04-18 | 2023-12-15 | コヴィディエン リミテッド パートナーシップ | Trocar assembly with obturator isolation device |
| WO2009039191A2 (en) * | 2007-09-20 | 2009-03-26 | Sentreheart, Inc. | Devices and methods for remote suture management |
| US8002788B2 (en) * | 2007-10-05 | 2011-08-23 | Tyco Healthcare Group Lp | Two-mode bladeless trocar assembly |
| US7938809B2 (en) * | 2008-04-14 | 2011-05-10 | Merit Medical Systems, Inc. | Quick release hemostasis valve |
| US8911463B2 (en) * | 2008-06-10 | 2014-12-16 | Covidien Lp | Bladed/bladeless obturator for use in a surgical trocar assembly |
| US8114112B2 (en) | 2008-12-30 | 2012-02-14 | Cook Medical Technologies Llc | Stylet locking mechanism for medical delivery devices |
| WO2010115030A1 (en) | 2009-04-01 | 2010-10-07 | Sentreheart, Inc. | Tissue ligation devices and controls therefor |
| US20120209306A1 (en) * | 2011-02-15 | 2012-08-16 | Tyco Healthcare Group Lp | Elastomeric trocar safety shield |
| US9730679B1 (en) * | 2012-12-21 | 2017-08-15 | University Of South Florida | Device for sterile uterine sampling and drug delivery |
| US20150297213A1 (en) * | 2014-04-16 | 2015-10-22 | Boston Scientific Scimed, Inc. | Fixation assembly and related methods of use and manufacture |
| CN110636879B (en) | 2017-03-13 | 2022-01-04 | 波士顿科学有限公司 | Hemostatic valve and methods for making and using a hemostatic valve |
| EP3595764A1 (en) | 2017-03-13 | 2020-01-22 | Boston Scientific Limited | Hemostasis valves and methods for making and using hemostasis valves |
| WO2018169683A1 (en) | 2017-03-13 | 2018-09-20 | Boston Scientific Scimed, Inc. | Hemostasis valves and methods for making and using hemostasis valves |
| CN111601635B (en) | 2017-09-12 | 2023-01-10 | 波士顿科学有限公司 | Hemostatic valve and methods for making and using a hemostatic valve |
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| US3696920A (en) * | 1970-10-15 | 1972-10-10 | Int Paper Co | Device for organizing objects |
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| US5261891A (en) * | 1991-01-15 | 1993-11-16 | Ethicon, Inc. | Trocar |
| DE9101109U1 (en) * | 1991-01-29 | 1992-02-27 | Effner Gmbh, 1000 Berlin, De | |
| US5139485A (en) * | 1991-05-03 | 1992-08-18 | Ethicon, Inc. | Verress needle with enhanced acoustical means |
| CA2075227C (en) * | 1991-10-18 | 2004-02-10 | Robert J. Geiste | Surgical fastening apparatus with shipping interlock |
| US5364372A (en) * | 1993-03-29 | 1994-11-15 | Endoscopic Concepts, Inc. | Trocar and cannula |
-
1994
- 1994-01-18 US US08/183,095 patent/US5437643A/en not_active Expired - Lifetime
- 1994-05-13 CA CA002123521A patent/CA2123521C/en not_active Expired - Fee Related
- 1994-05-16 DE DE69406194T patent/DE69406194T2/en not_active Expired - Fee Related
- 1994-05-16 EP EP94303488A patent/EP0629381B1/en not_active Expired - Lifetime
- 1994-05-16 JP JP6124682A patent/JPH0767883A/en active Pending
- 1994-05-16 AT AT94303488T patent/ATE159162T1/en not_active IP Right Cessation
- 1994-05-16 GR GR940100243A patent/GR1002985B/en not_active IP Right Cessation
- 1994-05-17 AU AU63175/94A patent/AU677645B2/en not_active Ceased
- 1994-09-13 US US08/304,957 patent/US5562611A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2123521A1 (en) | 1994-11-18 |
| US5437643A (en) | 1995-08-01 |
| US5562611A (en) | 1996-10-08 |
| EP0629381A2 (en) | 1994-12-21 |
| AU677645B2 (en) | 1997-05-01 |
| DE69406194D1 (en) | 1997-11-20 |
| EP0629381B1 (en) | 1997-10-15 |
| JPH0767883A (en) | 1995-03-14 |
| EP0629381A3 (en) | 1995-04-26 |
| GR1002985B (en) | 1998-10-08 |
| ATE159162T1 (en) | 1997-11-15 |
| DE69406194T2 (en) | 1998-02-19 |
| AU6317594A (en) | 1994-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |